POSIX

POSIX (Portable Operating System Interface) is a family of IEEE and Open Group standards that define a consistent operating system API, command line shell, and utility interfaces for maintaining compatibility between Unix and Unix-like systems. It is a specification rather than a network API, and there is no public REST or HTTP interface for the standard.

POSIX is profiled on the APIs.io network. Tagged areas include IEEE, Open-Group, Operating Systems, POSIX, and Standards.

🌐 Visit website 📡 Source on GitHub

5.0/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

IEEEOpen-Group Operating Systems POSIX Standards Unix

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.0/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.0 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Resources

Company 1

The organization behind the API

Website

Website

Other 4

Properties that don't map to a standard resource type

Standards

IEEE

Wikipedia

OpenGroup

Source (apis.yml)

aid: posix
name: POSIX
description: POSIX (Portable Operating System Interface) is a family of IEEE and Open Group standards that define a consistent
  operating system API, command line shell, and utility interfaces for maintaining compatibility between Unix and Unix-like
  systems. It is a specification rather than a network API, and there is no public REST or HTTP interface for the standard.
kind: standard
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/posix.png
tags:
- IEEE
- Open-Group
- Operating Systems
- POSIX
- Standards
- Unix
tags_raw:
- IEEE
- Open Group
- Operating Systems
- POSIX
- Standards
- Unix
url: https://raw.githubusercontent.com/api-evangelist/posix/refs/heads/main/apis.yml
created: '2025-01-01'
modified: '2026-04-28'
specificationVersion: '0.23'
apis: []
common:
- type: Website
  url: https://www.opengroup.org/
- type: Standards
  url: https://pubs.opengroup.org/onlinepubs/9699919799/
- type: IEEE
  url: https://standards.ieee.org/ieee/1003.1/7700/
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/POSIX
- type: OpenGroup
  url: https://www.opengroup.org/austin/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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